The number of exploratory wells dedicated to geological natural hydrogen is doubling every year. Around 12 were drilled in 2025; approximately 30 are planned for 2026. Behind this growth lies an industry moving from speculative interest toward its first genuine extractive discipline, with more than 100 companies active in exploration worldwide and formal licenses now obtainable in a dozen countries.
Geological hydrogen — also known as white hydrogen or gold hydrogen — is molecular hydrogen that forms underground through natural processes, with no industrial processing required. Early exploratory drilling conducted in Mali, Australia, the United States, and Canada has frequently detected concentrations above 80%. In Poland, the reassessment of historical well data has revealed hydrogen concentrations exceeding 60%, particularly in Cambrian reservoirs. Scientific interest is surging: since late 2020, the number of research papers on the subject has grown by 50%, surpassing 350 publications by 2025.
The key question is not whether hydrogen exists underground. It does. The real question is whether it can be found in sufficient concentrations, at accessible depths, in jurisdictions with workable regulatory frameworks, and at costs that justify the capital required. On the commercial front, only one producing field currently exists: Bourakébougou, the Malian village that lends its name to the site, where natural hydrogen powers local electricity generation. A real-world proof of concept — but still an isolated one. Scientific models estimate that the Earth naturally produces between 15 and 31 million metric tons of hydrogen per year — less than 1% of projected global demand by 2050. Only a fraction of that is realistically recoverable.
The investment landscape reflects this early-stage reality. Mantle8 secured €3.4 million in seed funding to develop 4D geological imaging technologies. Oklahoma State University received public funding for a statewide mapping initiative. The company Koloma has raised significant capital for exploration in Kansas and Nevada. In France, the Lorraine basin is among the most closely studied sites, with a modeled potential of 92 million tonnes — though this remains an estimate, not a certified reserve. For the conversation to truly shift, the sector will need a project capable of demonstrating sustained industrial flow rates, with at least 200 tonnes per day of hydrogen delivered near an ammonia or methanol offtaker. That milestone has not yet been reached.
The sector is emerging within a broader energy context in which rising electricity demand — driven by artificial intelligence and the electrification of end uses — is creating room for new low-emission energy sources. Geological hydrogen is not expected to replace nuclear, renewables, or natural gas: rather, it can complement them, filling niches where decarbonized production is otherwise difficult or expensive. The next five years of systematic drilling will be decisive. If demonstration projects can establish technical and economic viability, natural hydrogen could enter national energy strategies as a tangible resource — not merely a geological hypothesis.
